In　the　present　work,　graphite　fluoride-platinum(CFx-Pt)　composites　synthesized　via　a　novel　and　simple　in　situ　method　are　discussed　as　very　promising　cathodes　for　primary　lithium-ion　batteries.　The　influence　of　platinum　on　the　performance　of　CFx　was　investigated　through　X-ray　diffraction,　X-ray　photoelectron　spectroscopy,　transmission　electron　microscopy,　high-resolution　transmission　electron　microscopy　and　electrochemical　measurements.　We　found　that　the　emergence　of　semi-ionic　C-F　bonds　and　the　uniform　dispersion　of　platinum　on　the　surface　of　CFx　during　the　modification　process　are　the　most　important　factors　for　improving　the　electrochemical　performance　of　the　cathode　material.　With　the　conductivity　provided　by　the　platinum,　the　CFx-Pt　cathode　achieved　a　higher　discharge　capacity　and　a　higher　rate　capability　compared　with　those　of　the　pristine　CFx　cathode;　the　CFx-Pt　cathode　exhibited　a　discharge　capacity　of　600　mAh　g(-1),　an　excellent　power　density　of　8692　W　kg(-1)　at　a　current　density　of　5　C,　and　a　plateau　of　2.0　V.　More　importantly,　as　a　kind　of　lubricant,　CFx　makes　it　difficult　to　uniformly　disperse　modifying　materials　across　its　surface.　However,　our　method　opens　a　new　avenue　for　the　better　dispersion　of　modifying　materials　on　the　surface　of　CFx.